Cell-phone users can now make the ultimate long-distance call: to friends in the virtual world.
How modeling societies in silico can help us understand human inequality, revolution, and genocide.
The collision of virtual reality and mapping brings excitement to cyberspace.
A compact optical setup that produces 3-D video could make holography much less expensive.
A new kind of tape mimics the qualities of gecko feet.
A biotech startup is testing a gel that could make cardiovascular procedures safer.
Cars with advanced batteries get 100 mpg and boast far greater range than all-electric vehicles.